Okay so I Just picked up at GT with 35k Miles on it, Its bone stock as of right now. I live about 3 Hours from the Bonneville salt flats and I plan to try and make this thing a 200MPH+ car and get my quarter below 12.4 (so i can take on my buddys 03 cobra). I've ordered a Superchips cortex and a VR-G8 Ram air intake, My goal is to make this car as beastly as I possibly can without adding a turbo or supercharger, the other thing that I want to avoid is adding anything to the car that will make it super loud and rumbly when I'm driving around in the city or just idling. So basically I'm looking for recommendations on other mods people have been happy with and what kind of performance gains I can expect from them. Exhaust, headers, cams etc.